:root {
  --scene-max-width: 1920px;

  --hero-logo-width: 360px;
  --hero-logo-top: 8%;
  --hero-logo-left: 50%;

  --hero-tagline-font-size: 24px;
  --hero-tagline-top: 47%;
  --hero-tagline-left: 51%;

  --start-btn-top: 68%;
  --start-btn-left: 50%;
  --start-btn-font-size: 19px;

  --fork-width: 70px;
  --fork-bottom: 8%;
  --fork-left: 50%;

  --social-buttons-left: 20px;
  --social-buttons-bottom: 20px;
  --social-btn-font-size: 24px;

  --meatball-fall-speed: 6;
}

*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  font-family: "Montserrat", system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
  background: #002a4f;
  overflow: hidden;
}

.scene {
  position: relative;
  width: 100%;
  max-width: var(--scene-max-width);
  height: 100vh;
  margin: 0 auto;
  overflow: hidden;
  background: radial-gradient(
      circle at 50% 0%,
      #0f7ed1 0%,
      #00559d 35%,
      #003364 70%,
      #001b38 100%
    );
  box-shadow: 0 0 60px rgba(0, 0, 0, 0.75);
}

.scene::before {
  content: "";
  position: absolute;
  width: 160%;
  height: 160%;
  top: -40%;
  left: -30%;
  background:
    radial-gradient(circle at 50% 25%, rgba(255, 255, 255, 0.22), transparent 55%),
    radial-gradient(circle at 50% 25%, rgba(255, 255, 255, 0.13), transparent 40%);
  opacity: 0.45;
  z-index: 0;
}

.scene::after {
  content: "";
  position: absolute;
  inset: -40%;
  background: repeating-linear-gradient(
    120deg,
    rgba(255, 255, 255, 0.09) 0,
    rgba(255, 255, 255, 0.09) 2px,
    transparent 2px,
    transparent 12px
  );
  mix-blend-mode: screen;
  opacity: 0.16;
  animation: bgDrift 20s linear infinite;
  z-index: 0;
}

@keyframes bgDrift {
  0% {
    transform: translate3d(0, 0, 0);
  }
  100% {
    transform: translate3d(-100px, -80px, 0);
  }
}

.hero-logo {
  position: absolute;
  top: var(--hero-logo-top);
  left: var(--hero-logo-left);
  transform: translateX(-50%);
  width: var(--hero-logo-width);
  pointer-events: none;
  animation: logoFloat 5s ease-in-out infinite;
  z-index: 3;
}

@keyframes logoFloat {
  0%,
  100% {
    transform: translate(-50%, 0);
  }
  50% {
    transform: translate(-50%, -6px);
  }
}

.hero-tagline {
  position: absolute;
  top: var(--hero-tagline-top);
  left: var(--hero-tagline-left);
  transform: translateX(-50%);
  font-size: var(--hero-tagline-font-size);
  color: #ffffff;
  letter-spacing: 0.12em;
  text-transform: lowercase;
  text-align: center;
  text-shadow: 0 0 6px rgba(0, 0, 0, 0.4);
  z-index: 3;
}

.start-btn {
  position: absolute;
  top: var(--start-btn-top);
  left: var(--start-btn-left);
  transform: translateX(-50%);
  font-size: var(--start-btn-font-size);
  padding: 10px 24px;
  border-radius: 999px;
  border: 2px solid #ffffff;
  background: rgba(0, 0, 0, 0.15);
  color: #ffffff;
  text-transform: lowercase;
  letter-spacing: 0.12em;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease,
    background 0.15s ease;
  z-index: 3;
}

.start-btn:hover {
  transform: translateX(-50%) translateY(-2px);
  background: rgba(255, 255, 255, 0.09);
  box-shadow: 0 8px 18px rgba(0, 0, 0, 0.35);
}

.start-btn:active {
  transform: translateX(-50%) translateY(1px) scale(0.98);
  box-shadow: 0 3px 8px rgba(0, 0, 0, 0.3);
}

.social-buttons {
  position: absolute;
  left: var(--social-buttons-left);
  bottom: var(--social-buttons-bottom);
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 3;
}

.social-btn {
  font-size: var(--social-btn-font-size);
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.7);
  background: rgba(0, 0, 0, 0.25);
  color: #ffffff;
  cursor: pointer;
  text-align: center;
  transition: background 0.15s ease, transform 0.15s ease,
    box-shadow 0.15s ease;
}

.social-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-1px);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
}

.social-btn:active {
  transform: translateY(1px) scale(0.98);
}

.fork {
  position: absolute;
  bottom: var(--fork-bottom);
  left: var(--fork-left);
  transform: translateX(-50%);
  width: var(--fork-width);
  user-select: none;
  pointer-events: none;
  filter: drop-shadow(0 6px 10px rgba(0, 0, 0, 0.6));
  transition: opacity 0.2s ease, transform 0.05s linear;
  opacity: 0;
  z-index: 4;
}

.scene.game-active .fork {
  opacity: 1;
}

.scene.caught .fork {
  animation: forkCelebrate 0.4s ease-out 0s 2;
}

@keyframes forkCelebrate {
  0% {
    transform: translateX(-50%) translateY(0);
  }
  50% {
    transform: translateX(-50%) translateY(-10px);
  }
  100% {
    transform: translateX(-50%) translateY(0);
  }
}

.meatball-layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: 2;
}

.meatball {
  position: absolute;
  top: -60px;
  width: 60px;
  user-select: none;
  pointer-events: none;
  filter: drop-shadow(0 4px 10px rgba(0, 0, 0, 0.6));
}

.scene.caught {
  animation: sceneFlash 0.25s ease-out;
}

@keyframes sceneFlash {
  0% {
    box-shadow: 0 0 0 rgba(255, 255, 255, 0);
  }
  50% {
    box-shadow: 0 0 40px rgba(255, 255, 255, 0.7) inset;
  }
  100% {
    box-shadow: 0 0 0 rgba(255, 255, 255, 0);
  }
}

.about-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 9, 20, 0.6);
  backdrop-filter: blur(7px);
  -webkit-backdrop-filter: blur(7px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
  z-index: 10;
}

.about-overlay.show {
  opacity: 1;
  pointer-events: auto;
}

.about-modal {
  background: #f7fbff;
  color: #001b38;
  border-radius: 18px;
  padding: 24px 26px 20px;
  max-width: 420px;
  width: 90%;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.55);
  border-top: 4px solid #0f7ed1;
  border-bottom: 4px solid #0f7ed1;
}

.about-title {
  font-size: 22px;
  font-weight: 800;
  margin-bottom: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.about-text {
  font-size: 14px;
  line-height: 1.55;
  margin-bottom: 18px;
}

.about-close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 6px 16px;
  border-radius: 999px;
  border: none;
  background: #0f7ed1;
  color: #ffffff;
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.35);
  transition: transform 0.12s ease, box-shadow 0.12s ease,
    background 0.12s ease;
}

.about-close:hover {
  background: #0c64a4;
  transform: translateY(-1px);
}

.about-close:active {
  transform: translateY(1px) scale(0.97);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.35);
}

@media (max-width: 768px) {
  :root {
    --hero-logo-width: 200px;
    --hero-tagline-font-size: 14px;
    --start-btn-font-size: 14px;
    --fork-width: 70px;
  }

  .social-buttons {
    flex-direction: row;
    left: 50%;
    bottom: 14px;
    transform: translateX(-50%);
  }

  .social-btn {
    text-align: center;
  }
}